electron configuration after both oxidation events. The monocation [1]+ showed a strong NIR absorption in the UV–vis–NIR spectrum that was a IVCT [NiI → FeII] and inverse IVCT (iIVCT) [FeII → NiI], and the IR SEC spectrum of [1]+ showed multiple bands associated with two similar configurations, one where the spin is delocalized over both metal atoms and a second configuration where the spin is Ni localized
[NiCl 2(dippf)] [ 1 ](dippf = 1,1'-双(
二异丙基膦基)
二茂铁)是由[NiCl 2(dippf)]和[Fe(CO)5 ]在高温/高压下使用微波合成的( MW)加热。[ 1 ]在循环伏安图中显示了两个氧化波,并且在−30°C下使用UV-vis-NIR光谱电
化学(
SEC)和IR
SEC以及通过DFT的计算支持来确定位置和电子构型氧化事件。单阳离子[ 1 ] +在UV-vis-NIR光谱中表现出很强的NIR吸收,这是I
VCT [Ni I →Fe II ]和反相I
VCT(iI
VCT)[Fe II→Ni I ],[ 1 ] +的IR
SEC谱显示出多个与两个相似构型相关的谱带,一个带自旋在两个
金属原子上均离域化,第二个带自旋在Ni上局部化。第二次氧化为[ 1 ] 2+发生在Ni原子上,并导致形成Fe→Ni导数键。